Even by the sometimes shrill standards of the New York Post, the headline seemed lurid: CHILLING DISCOVERY AFTER MANIAC'S THREAT: PLUTONIUM IN CITY'S WATER. Have New York City's 7 million residents been imbibing water that is laced with nuclear-reactor fuel?
The answer last week from New York's ebullient Mayor Ed Koch: Yes, but don't worry. Koch, in making the surprise announcement, explained that on April 1 an anonymous letter writer had threatened to dump "substantial quantities" of poisonous plutonium into the city's water supply unless all charges were dropped against Bernhard Goetz, the subway vigilante...